The Terminator and the AI are close in comparison. But when you add the Defensive Edge +P to the mix it becomes a new ball game and allows loading up for up to 200 additional FPS with 300 gr bullets over a standard LM AI.

Jeff

Are you saying the 338edge +p is running 300 grainers 3200 fps? I thought it was 3000-3050.

Are you saying the 338edge +p is running 300 grainers 3200 fps? I thought it was 3000-3050.

Wait this is not on a RUM case but a blown out 338 lapua case?

No, I am talking about my LRKM which is the first one built in the .338 Terminator +P. It is indeed a blown out 338 LM case with the +P addition. Here is the chronograph pic below which mirrors what Shawn got with initial testing of this rifle with a different chronograph.

Any ideas as to what could happen with a 338-408 cheytac with this +P chamber? Would it even work?

A guess would be an additional 150 fps from the normal 338-408. But that is only a guess from what I have seen it do for other calibers.

Another though it the point of diminishing returns. You can run any caliber to the point it is not practical or has a very low round count capability. I am hopeful the 338 Terminator +P is not to that point.

We will see, the original 338 EDGE +P is still going and has seen over 3100 at times if I understand correctly. Don't quote me on this but I think it is right at 0r 0ver 1000 rounds now and still shooting. This is from memory and I have not seen actual results though. So I am optimistic and hoping for 1500. If it dies at 1000 I will do it again with a melonited barrel and see how that works. Only time will tell.